JP2001293802A - Heat insulating cup made of paper and method for manufacturing the same - Google Patents
Heat insulating cup made of paper and method for manufacturing the sameInfo
- Publication number
- JP2001293802A JP2001293802A JP2000115057A JP2000115057A JP2001293802A JP 2001293802 A JP2001293802 A JP 2001293802A JP 2000115057 A JP2000115057 A JP 2000115057A JP 2000115057 A JP2000115057 A JP 2000115057A JP 2001293802 A JP2001293802 A JP 2001293802A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- paper cup
- cup
- heat
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、即席麺などを収容
する紙製の断熱カップに関し、特には、熱湯を注いでそ
のまま飲食することが可能ないわゆるインスタント食品
やインスタント飲料用の紙製の断熱カップに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper insulation cup for storing instant noodles and the like, and more particularly to a paper insulation for so-called instant food or instant beverage which can be poured and consumed as it is by pouring boiling water. About the cup.
【０００２】[0002]
【従来の技術】即席麺などの収容物に熱湯を注いで食す
る紙製断熱カップとして、紙製筒体の上部を内側にカー
ルさせて内カール部を形成させ、紙製筒体と紙カップ本
体胴部との間に断熱空間層を設け紙製断熱カップとした
ものがある。2. Description of the Related Art As a paper heat insulating cup for pouring hot water into a container such as instant noodles and eating it, the upper part of a paper cylinder is curled inward to form an inner curl portion. In some cases, a heat insulating space layer is provided between the body and the body to form a paper heat insulating cup.
【０００３】この場合、紙カップ本体に紙製筒体を被せ
て一体化させるための紙カップ本体と紙製筒体の接着方
法としては、エマルジョン型接着剤を介して接着させる
方法や、紙カップ本体胴部の外側面のポリオレフィン系
樹脂層を加熱溶融させたところに紙製筒体を被せて接着
させる方法などが考えられている。[0003] In this case, as a method of bonding the paper cup body with the paper cup body to cover and integrate the paper cup body with the paper cup body, a method of bonding via an emulsion type adhesive or a method of bonding the paper cup body body For example, a method in which a polyolefin resin layer on the outer side of the above is heated and melted and a paper cylinder is covered and bonded is considered.
【０００４】しかしながら、前者の方法は、エマルジョ
ン型接着剤を乾燥させるのに時間がかかるため生産速度
が遅い、あるいは紙カップ本体と紙製筒体を接着させる
ために多くの接着剤を必要とするため接着剤が接着部分
からはみ出す、などの問題がある。However, the former method takes a long time to dry the emulsion type adhesive, resulting in a low production rate, or requires a large amount of adhesive for bonding the paper cup body and the paper cylinder. There is a problem that the adhesive protrudes from the bonded portion.
【０００５】また、後者の方法では、コートボール層ま
たは、その上に印刷を施した印刷表示層が紙製筒体の外
側面となり、この面と紙カップ本体の胴部のポリオレフ
ィン系樹脂層を接着させることになり、コートボール層
または印刷表示層とポリオレフィン系樹脂層を接着させ
ることになり、接着の安定性を得ることは難しい。In the latter method, the coated ball layer or the printed display layer printed thereon is the outer surface of the paper cylinder, and this surface is bonded to the polyolefin resin layer of the body of the paper cup body. As a result, the coated ball layer or the printed display layer is bonded to the polyolefin-based resin layer, and it is difficult to obtain stable bonding.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、紙カップ本
体に紙製筒体を被せて紙製筒体と紙カップ本体胴部との
間に断熱空間層を設けた紙製断熱カップに関する以上の
ような問題点に着目してなされたもので、生産効率が高
く、かつ、接着の安定性が有り、品質の良好な紙カップ
本体と紙製筒体からなる紙製断熱カップを提供すること
を目的とする。SUMMARY OF THE INVENTION The present invention relates to a paper heat insulating cup in which a paper cylindrical body is placed on a paper cup main body and an insulating space layer is provided between the paper cylindrical body and the paper cup main body body. The object of the present invention is to provide a heat insulating cup made of a high quality paper cup body and a cylindrical paper body, which has a high production efficiency, has a stable bonding, and has a high quality. I do.
【０００７】[0007]
【課題を解決するための手段】本発明の請求項１の発明
は、胴部と底部とからなり、開口部周縁が外側にカール
した口縁部を有する紙カップ本体と、紙カップ本体の胴
部外側に嵌め込まれ上部周縁に内側にカールした内カー
ル部が形成された紙製筒体とから構成され、紙カップ本
体胴部と紙製筒体の間に断熱空間層が形成される紙製断
熱カップであって、紙カップ本体の胴部を形成する胴部
材は表裏両面にポリオレフィン系樹脂膜を塗布したポリ
オレフィン系樹脂加工紙から成り、紙カップ本体胴部の
口縁部直下の胴部外側面が、紙製筒体内カール部の外側
面とヒートシールニスを介して接着固定されていること
を特徴とする紙製断熱カップである。According to a first aspect of the present invention, there is provided a paper cup body having a body portion and a bottom portion, the opening portion having a rim portion curled outward, and a paper cup body outside the body portion. And a paper-made heat-insulating cup formed of a paper-made cylindrical body having an inner curled portion curled inward at the upper peripheral edge thereof and having an insulating space layer formed between the paper-cup main body and the paper-made cylindrical body. The body member forming the body of the paper cup body is made of polyolefin resin processed paper coated with a polyolefin resin film on both front and back surfaces, and the body outer surface immediately below the edge of the body of the paper cup body is made of paper. A heat insulating cup made of paper, which is adhesively fixed to an outer surface of a curl portion in a cylinder via a heat seal varnish.
【０００８】このように、紙カップ本体胴部の口縁部直
下の胴部外側面と紙製筒体内カール部の外側面とが、ヒ
ートシールニスを介して接着固定されているので、特別
の乾燥工程を必要とせず作業効率が良いし、接着剤が接
着部分からはみ出すこともない。また、コートボール層
またはその上に印刷を施した印刷表示層とポリオレフィ
ン樹脂膜とが直接、接着することがないので、コートボ
ール層や印刷表示層であっても安定した接着が可能にな
る。As described above, since the outer surface of the body just below the edge of the body of the paper cup main body and the outer surface of the curl portion in the paper cylinder are bonded and fixed via the heat seal varnish, special drying is performed. No process is required, the work efficiency is good, and the adhesive does not protrude from the bonded part. Further, since the coated ball layer or the printed display layer printed thereon and the polyolefin resin film do not directly adhere to each other, stable adhesion can be achieved even with the coated ball layer or the printed display layer.
【０００９】なお、ヒートシールニスは紙カップ本体胴
部のしかるべき箇所に塗布しても良いし、紙製筒体の内
カール部のしかるべき箇所に塗布しても良いし、紙カッ
プ本体胴部と紙製筒体の内カール部の両方に塗布しも良
い。The heat seal varnish may be applied to an appropriate portion of the body of the paper cup body, may be applied to an appropriate portion of the inner curl portion of the paper cylinder, or may be applied to the body of the paper cup body. It may be applied to both the inner curled portion of the paper cylinder.
【００１０】また、請求項２の発明は、紙カップ本体を
作製する紙カップ成形工程、紙製筒体ブランクをスリー
ブ状に加工し、該スリーブの上部周縁に内側に曲がる内
カール部を形成させる内カール部形成工程、紙カップ本
体の口縁部直下の胴部外側面周囲にヒートシールニスを
塗布するヒートシールニス塗布工程、ヒートシールニス
塗布部分をホットエアーにより加熱し、ポリオレフィン
系樹脂膜を熱融解するホットエアー吹き付け工程、紙製
筒体内に紙カップ本体を嵌め込み、紙カップ本体の胴部
外側面と紙製筒体の内カール部外側面とを熱融着により
接着固定させる嵌め込み固着工程、上記各工程からなる
請求項１記載の紙製断熱カップの製造方法である。[0010] The invention according to claim 2 is a paper cup forming step for producing a paper cup main body, an inner curl in which a paper cylinder blank is processed into a sleeve shape, and an inner curl portion bent inward is formed on an upper peripheral edge of the sleeve. Part forming step, a heat seal varnish application step of applying a heat seal varnish around the outer periphery of the body just below the edge of the paper cup body, and heating the heat seal varnish applied portion with hot air to thermally melt the polyolefin resin film. The hot air spraying step, the paper cup body is fitted into the paper cylinder body, and the fitting and fixing step of bonding and fixing the outer surface of the body of the paper cup body and the outer surface of the inner curl portion of the paper cylinder body by heat fusion, The method for producing a paper heat insulating cup according to claim 1.
【００１１】上記各工程を経て紙製断熱カップを作製す
ることにより、見栄えが良く、断熱性に優れた品質の良
いカップとなる。なお、前述の紙製筒体の上部周縁に内
側に曲がる内カール部を形成させる内カール部形成工程
において、同時にまたは別工程で、該紙製筒体の下部周
縁に内方に彎曲した彎曲部を形成させる彎曲部形成工程
を設けることで、さらに断熱性を高めることが可能であ
る。By producing a paper heat-insulating cup through each of the above-described steps, a good-looking and high-quality cup excellent in heat insulation can be obtained. In the above-described inner curl portion forming step of forming an inner curl portion that bends inward on the upper peripheral edge of the paper cylinder, a curved portion that is curved inward on the lower peripheral edge of the paper cylinder at the same time or in a separate process. By providing a curved portion forming step of forming the ridge, it is possible to further enhance the heat insulating property.
【００１２】[0012]
【発明の実施の形態】以下実施例により本発明を詳細に
説明する。本発明の紙製断熱カップは、例えば図１に示
すように、胴部（１１）と底部（１２）とからなり、開
口部周縁が外側にカールした口縁部（１３）を有する紙
カップ本体（１０）と、上部周縁が内側にカールした内
カール部（２１）を有する紙製筒体（２０）から構成さ
れ、紙カップ本体（１０）の胴部外側に紙製筒体８２
０）が嵌め込まれ、紙カップ本体胴部と紙製筒体の間に
断熱空間層（３０）が形成されてなるものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to embodiments. As shown in FIG. 1, for example, the paper heat insulating cup of the present invention comprises a body (11) and a bottom (12), and a paper cup body (13) having an opening edge (13) whose outer periphery curls outward. 10) and a paper cylinder (20) having an inner curl portion (21) in which an upper peripheral edge is curled inward, and a paper cylinder 82 is provided outside the body of the paper cup body (10).
0) is fitted, and a heat insulating space layer (30) is formed between the body of the paper cup body and the paper cylinder.
【００１３】紙カップ本体（１０）は、胴部（１１）を
形成する胴部材、底部（１２）を形成する底部材とも、
坪量が１７０〜４００ｇ／ｍ2 程度のカップ原紙の両面
または片面にポリプロピレン樹脂、低密度ポリエチレン
樹脂などのポリオレフィン系樹脂を１０〜５０μｍ程度
塗布した加工紙を一般的な紙カップ成形機にセットして
作製することができる。ここで、胴部を形成する胴部材
には、表裏両面にポリオレフィン系樹脂を塗布した加工
紙を使用することがこの発明の重要な点である。The paper cup body (10) includes a body member forming a body portion (11) and a bottom member forming a bottom portion (12).
A base paper having a basis weight of about 170 to 400 g / m 2 is coated with a polyolefin-based resin such as a polypropylene resin or a low-density polyethylene resin on both sides or one side of the base paper about 10 to 50 μm. Can be made. Here, it is an important point of the present invention that a processed paper in which a polyolefin-based resin is applied to both front and back surfaces is used for the body member forming the body portion.
【００１４】口縁部（１３）は、図示はしてないが、上
下方向に押しつぶした偏平な口縁部としても良い。Although not shown, the lip (13) may be a flat lip crushed in the vertical direction.
【００１５】紙製筒体（２０）は、先ず、坪量が１９０
〜４２０ｇ／ｍ2 程度のコートボール、白ライナー、カ
ップ原紙等の板紙を素材として、紙カップ本体の胴部を
覆う大きさの所定寸法の略扇形に打ち抜き、紙製筒体ブ
ランクを作製する。First, the paper cylinder (20) has a basis weight of 190.
Using a paperboard such as a coated ball, a white liner, and a cup base paper of about 420 g / m 2 as a raw material, the paperboard blank is punched into a substantially fan shape having a predetermined size large enough to cover the body of the paper cup body.
【００１６】ついで、紙製筒体ブランクの両端を重ね合
わせ、例えば、エチレン・酢酸ビニール樹脂系のエマル
ジョン型接着剤を介して接着させ筒状に加工する。ある
いは、紙製筒体ブランクの裏面に低密度ポリエチレン樹
脂を塗布して熱により接着させ、筒状に加工しても良
い。Next, the both ends of the paper cylinder blank are overlapped and adhered, for example, via an ethylene-vinyl acetate resin-based emulsion adhesive to form a cylinder. Alternatively, a low-density polyethylene resin may be applied to the back surface of the paper cylinder blank and adhered by heat to be processed into a cylindrical shape.
【００１７】筒状に加工した筒体をインカール金型を使
用して加圧およびまたは加熱加圧して筒体の上端を内側
にカールさせた内カール部（２１）を形成させる。この
際、同時にまたは別工程で、絞り金型を用いて加圧また
は加熱加圧して筒体の下端を内方に彎曲した彎曲部（２
２）を形成させても良い。The cylindrical body processed into a cylindrical shape is pressurized and / or heated using an incurling mold to form an inner curl portion (21) in which the upper end of the cylindrical body is curled inward. At this time, simultaneously or in a separate process, the lower end of the cylindrical body is bent inward by pressing or heating and pressing using a drawing die (2).
2) may be formed.
【００１８】紙製筒体（２０）の紙カップ本体（１０）
への嵌め込みは、例えばつぎのようにして行う。先ず、
紙カップ本体の胴部の口縁部の直下の、紙製筒体を嵌め
込んだ際に、紙カップ本体の胴部の外側面が紙製筒体の
内カール部の外側面と接触する箇所近傍周囲にヒートシ
ールニスを塗布し、ヒートシールニス層（５）を形成さ
せる。A paper cup body (10) of a paper cylinder (20)
For example, the fitting is performed as follows. First,
Immediately below the edge of the body of the paper cup body, around the place where the outer surface of the body of the paper cup body contacts the outer surface of the inner curl of the paper cylinder when the paper cylinder is fitted To form a heat seal varnish layer (5).
【００１９】塗布する方法は、ノズルを使用してヒート
シールニスを噴霧する、糊車によりヒートシールニスを
転写する、ヒートシールニスをあらかじめ胴部の該当す
る部分に印刷しておく等、公知の方法を用いれば良い。The method of application is a known method such as spraying the heat seal varnish using a nozzle, transferring the heat seal varnish by a glue wheel, and printing the heat seal varnish in advance on the corresponding portion of the body portion. A method may be used.
【００２０】なお、ヒートシールニス層（５）は、紙製
筒体の、紙カップ本体に紙製筒体を被せた際、内カール
部の紙カップ本体の胴部と接触する箇所に形成させても
良い。この場合、紙カップ本体の胴部の上記したヒート
シールニスは、塗布しておいても良いし、なくても良
い。すなわち、どちらか一方に塗布してあれば良い。The heat-sealing varnish layer (5) may be formed in a portion of the paper cylinder that comes into contact with the body of the paper cup body in the inner curl portion when the paper cup body is put on the paper cup body. good. In this case, the heat seal varnish on the body of the paper cup main body may or may not be applied. That is, it suffices if it is applied to one of them.
【００２１】つぎに、ヒートシールニス層塗布部分を加
熱して、表面のポリオレフィン系樹脂膜を溶融する。加
熱する方法は、ホットエアーを吹き付ける、高周波加熱
をする、放射線熱をするなど、公知の方法を用いれば良
い。ヒートシールニスを塗布した直後に加熱することに
より、ニスに含有される溶剤を乾燥させると同時に表面
のポリオレフィン系樹脂膜を溶融することができる。Next, the portion where the heat seal varnish layer is applied is heated to melt the polyolefin resin film on the surface. As a heating method, a known method such as blowing hot air, high-frequency heating, or radiation heat may be used. By heating immediately after applying the heat seal varnish, the solvent contained in the varnish can be dried and at the same time the polyolefin resin film on the surface can be melted.
【００２２】紙カップ本体の胴部の口縁部直下の周囲の
ポリオレフィン系樹脂膜が溶融しているうちに、紙カッ
プ本体を底の方から紙製筒体の中に嵌め込み、紙製筒体
の内カール部（２１）の内側面は紙カップ本体の口縁部
直下のヒートシールニスを塗布して溶融したポリオレフ
ィン系樹脂膜と接触固定され、紙製筒体の内カール部の
内側面と紙カップ本体の胴部の溶融したポリオレフィン
系樹脂膜とはヒートシールニス層（５）を介して接着固
定される（図２参照）。また、紙製筒体と紙カップ本体
の底部との接着においても同様に、ホットエアーを用い
てポリオレフィン系樹脂膜を溶融して接着固定しても良
い。この際、ヒートシールニス層は設けても、設けなく
てもどちらでも構わない。このことにより紙カップ本体
の胴部（１１）と紙製筒体（２０）の間に断熱空間層
（３０）ができる。While the surrounding polyolefin resin film just below the edge of the body of the paper cup body is being melted, the paper cup body is fitted into the paper cylinder from the bottom, and the inside of the paper cylinder is removed. The inner surface of the curled portion (21) is fixed in contact with a polyolefin resin film melted by applying a heat seal varnish just below the edge of the paper cup body, and the inner surface of the inner curled portion of the paper cylinder and the inner surface of the paper cup body. The melted polyolefin-based resin film of the body is bonded and fixed via a heat seal varnish layer (5) (see FIG. 2). Similarly, in bonding the paper cylinder and the bottom of the paper cup body, the polyolefin resin film may be melted and bonded and fixed using hot air. At this time, the heat seal varnish layer may or may not be provided. This forms a heat insulating space layer (30) between the body (11) of the paper cup body and the paper cylinder (20).
【００２３】[0023]
【実施例】以下に本発明の実施例をさらに具体的に説明
する。 〈実施例１〉先ず、胴部を形成する胴部材として坪量２
２０ｇ／ｍ2 のカップ原紙（１）の表面に厚さ１５μｍ
の低密度ポリエチレン樹脂（２）を、また、裏面に厚さ
２５μｍの低密度ポリエチレン樹脂（３）をそれぞれ塗
布したポリエチレン加工紙を、また、底部を形成する底
部材として坪量２００ｇ／ｍ2 のカップ原紙の片面に厚
さ３０μｍの低密度ポリエチレン樹脂を塗布したポリエ
チレン加工紙をそれぞれ準備し、一般的な紙カップ成形
機を使用して、ポリエチレン（２５μｍ厚、３０μｍ）
を内側にした、高さ１０５ｍｍ、口径１４０ｍｍ、底径
１０２ｍｍ、口縁部高さ５ｍｍ、口縁部幅５ｍｍ、テー
パー角度７．５°の紙カップ本体１０を成形した。EXAMPLES Examples of the present invention will be described below more specifically. <Example 1> First, a basis weight of 2 was used as a body member forming a body part.
15 μm thick on the surface of 20 g / m 2 cup base paper (1)
Low-density polyethylene resin (2), a low-density polyethylene resin (3) having a thickness of 25 μm applied to the back surface thereof, and a polyethylene-coated paper having a thickness of 200 g / m 2 as the bottom member forming the bottom. Prepare a polyethylene-coated paper having a low-density polyethylene resin having a thickness of 30 μm applied to one side of a cup base paper, and use a general paper cup molding machine to make polyethylene (25 μm thick, 30 μm).
, The paper cup body 10 having a height of 105 mm, a diameter of 140 mm, a bottom diameter of 102 mm, a height of the rim of 5 mm, a width of the rim of 5 mm, and a taper angle of 7.5 ° was formed.
【００２４】別に、坪量２７０ｇ／ｍ2 のコートボール
（４）を用いて、所定寸法の扇形の紙製筒体ブランクを
作製し、この扇形の筒体ブランクの両端を重ね、エチレ
ン・酢酸ビニール樹脂系のエマルジョン型接着剤を介し
て接着させ、筒状に成形した。Separately, using a coated ball (4) having a basis weight of 270 g / m 2 , a fan-shaped paper cylinder blank having a predetermined size is prepared, and both ends of the fan-shaped cylinder blank are overlapped with each other to form ethylene / vinyl acetate. They were bonded via a resin-based emulsion-type adhesive and formed into a cylindrical shape.
【００２５】続いて筒状に成形した筒体ブランクをイン
カール金型を使用して加熱加圧して上端縁を内側にカー
ルさせた厚さ（幅）１．５ｍｍの内カール部（２１）を
形成させた。また、筒状に成形した筒体ブランクの下部
は、絞り金型を使用して最大絞り深さ２．５ｍｍの彎曲
部（２２）を形成させ、紙製筒体（２０）とした。Subsequently, the cylindrical blank formed into a cylindrical shape is heated and pressed using an in-curl mold to form an inner curl portion (21) having a thickness (width) of 1.5 mm and curling the upper edge inward. I let it. In addition, a curved portion (22) having a maximum drawing depth of 2.5 mm was formed at the lower portion of the cylindrical blank formed in a cylindrical shape by using a drawing die, thereby forming a paper cylinder (20).
【００２６】先に成形した紙カップ本体の胴部外側の口
縁部の下に全周にわたり幅約５ｍｍのヒートシールニス
塗布層（５）をノズルによる噴霧方式により形成した。
ヒートシールニスは主成分がポリオレフィン系樹脂から
なる溶剤タイプを用いた。A heat-sealing varnish coating layer (5) having a width of about 5 mm was formed over the entire periphery of the previously formed paper cup body under the outer edge of the body by a spraying method using a nozzle.
As the heat seal varnish, a solvent type mainly composed of a polyolefin resin was used.
【００２７】紙カップ本体胴部のヒートシールニス塗布
層（５）を設けた口縁部近傍および紙カップ本体胴部下
端部分にそれぞれホットエアーを吹き付け、表面の低密
度ポリエチレン層を溶融させた。Hot air was blown to the vicinity of the edge of the body of the paper cup body where the heat seal varnish coating layer (5) was provided and to the lower end of the body of the paper cup body, respectively, to melt the low density polyethylene layer on the surface.
【００２８】最後に、別に作製しておいた紙製筒体に上
記の紙カップ本体を底部の方から嵌め込み、紙製筒体の
上端は紙カップ本体の口縁部の下にヒートシールニス層
（５）を介して接着固定され、紙製筒体の下端は紙カッ
プ胴部下部に接触固定されて、紙製筒体と紙カップ本体
胴部の間に断熱空間層（３０）を有する実施例１の紙製
断熱カップとした（図１、図２参照）。Finally, the paper cup body is fitted into a separately prepared paper cylinder from the bottom, and the upper end of the paper cylinder is placed under the edge of the paper cup body under the heat seal varnish layer (5). ), The lower end of the paper cylinder is fixed in contact with the lower part of the paper cup body, and the paper of Example 1 having an insulating space layer (30) between the paper cylinder and the body of the paper cup body. The heat-insulating cup was made (see FIGS. 1 and 2).
【００２９】〈実施例２〉紙製筒体の内カール部の、紙
カップ本体の胴部外側と接触する箇所にもノズルから噴
霧させる方式で約５ｍｍ幅のヒートシールニス層を設け
た以外は実施例１と同様の材料、方法を用いて紙カップ
本体の胴部に紙製筒体を被せて実施例２の紙製断熱カッ
プを作製した。<Example 2> The method was carried out except that a heat seal varnish layer having a width of about 5 mm was provided by a method of spraying from a nozzle also in a portion of the inner curl portion of the paper cylinder which was in contact with the outside of the body of the paper cup body. Using the same material and method as in Example 1, a paper cylinder was placed over the body of the paper cup body to produce a paper heat-insulating cup of Example 2.
【００３０】〈実施例３〉紙カップ本体の胴部外側の、
紙製筒体の内カール部と接触する箇所にヒートシールニ
ス塗布層を設けない以外は実施例２と同様の材料、方法
を用いて紙カップ本体の胴部に紙製筒体を被せて実施例
３の紙製断熱カップを作製した。<Embodiment 3> Outside the body of the paper cup body,
An example in which the paper cylinder is covered on the body of the paper cup body using the same material and method as in Example 2 except that the heat seal varnish coating layer is not provided at a position in contact with the inner curl portion of the paper cylinder. The paper heat insulating cup of No. 3 was produced.
【００３１】〈比較例１〉紙カップ本体の胴部外側の、
紙製筒体の内カール部と接触する箇所にヒートシールニ
ス塗布層を設けない以外は実施例１と同様の材料、方法
を用いて紙カップ本体の胴部に紙製筒体を被せて紙製断
熱カップを作製し、比較例１の紙製断熱カップとした。<Comparative Example 1> Outside the body of the paper cup body,
A paper cylinder is placed on the body of the paper cup body by using the same material and method as in Example 1 except that the heat seal varnish coating layer is not provided at a position in contact with the inner curl portion of the paper cylinder. A heat-insulating cup was prepared and used as a paper heat-insulating cup of Comparative Example 1.
【００３２】〈比較例２〉先ず、紙カップ本体の胴部を
形成する胴部材に坪量２２０ｇ／ｍ2 のカップ原紙の片
面に厚さ２５μｍの低密度ポリエチレン樹脂を塗布した
ポリエチレン加工紙を、また、底部を形成する底部材と
して坪量２００ｇ／ｍ2 のカップ原紙の片面に厚さ３０
μｍの低密度ポリエチレン樹脂を塗布したポリエチレン
加工紙をそれぞれ準備し、一般的な紙カップ成形機を使
用して、ポリエチレンを内側にした、実施例１と同じ寸
法の紙カップ本体を成形した。<Comparative Example 2> First, a polyethylene-coated paper in which a low-density polyethylene resin having a thickness of 25 μm was applied to one side of a cup base paper having a basis weight of 220 g / m 2 on a body member forming a body portion of a paper cup body, And a thickness of 30 g on one side of a cup base paper having a basis weight of 200 g / m 2 as a bottom member forming a bottom portion.
A polyethylene-coated paper coated with a low-density polyethylene resin of μm was prepared, and a paper cup body having the same dimensions as in Example 1 with polyethylene inside was molded using a general paper cup molding machine.
【００３３】このカップ本体を使用した以外は実施例１
と同じ紙製筒体を使用し、実施例１と同様の方法で紙カ
ップ本体の胴部に紙製筒体を被せて紙製断熱カップを作
製し、比較例２の紙製断熱カップとした。Example 1 except that this cup body was used.
Using the same paper cylinder as in Example 1, the paper cylinder was placed on the body of the paper cup body in the same manner as in Example 1 to produce a paper insulation cup, and the paper insulation cup of Comparative Example 2 was obtained.
【００３４】〈比較例３〉比較例２で使用した紙カップ
本体を使用した以外は、実施例２と同様の紙製筒地を使
用し、実施例２と同様に紙カップ本体にヒートシールニ
ス層を設け、紙カップ本体の胴部に紙製筒体を被せて紙
製断熱カップを作製し、比較例３の紙製断熱カップとし
た。<Comparative Example 3> A paper cylinder body similar to that of Example 2 was used except that the paper cup body used in Comparative Example 2 was used, and a heat seal varnish layer was formed on the paper cup body in the same manner as in Example 2. Then, a paper heat insulating cup was prepared by covering the body of the paper cup body with a paper cylinder, and the paper heat insulating cup of Comparative Example 3 was obtained.
【００３５】〈比較例４〉比較例２で使用した紙カップ
本体を使用した以外は、実施例３と同様の材料、方法を
用いて紙製断熱カップを作製し、比較例４の紙製断熱カ
ップとした。Comparative Example 4 A paper heat insulating cup was manufactured using the same material and method as in Example 3 except that the paper cup body used in Comparative Example 2 was used. And
【００３６】〈比較例５〉比較例２で使用した紙カップ
本体を使用した以外は、比較例１と同様の材料、方法を
用いて紙製断熱カップを作製し、比較例５の紙製断熱カ
ップとした。<Comparative Example 5> A paper heat insulating cup was manufactured using the same material and method as in Comparative Example 1 except that the paper cup body used in Comparative Example 2 was used. And
【００３７】このようにして作製した実施例３種類、比
較例５種類、合計８種類の紙製断熱カップの紙カップ本
体胴部の口縁部直下の胴部外側面と、紙製筒体内カール
部の外側面との接着性を下記する方法により観察、評価
した。その結果を表１に示す。 紙カップ本体胴部と紙製筒体内カール部との接着性の評
価方法；出来上がった紙製断熱カップを破壊して、円周
上でどの程度胴部と内カール部が接着しているかを目視
により確認。 ○；紙カップ本体胴部と紙製筒体内カール部との接触部
分が完全に接着している（円周方向に全ての部分が完全
に接着している）。 △；紙カップ本体胴部と紙製筒体内カール部との接触部
分に一部接着していない部分がある。 ×；紙カップ本体胴部と紙製筒体内カール部との接触部
分が全く接着していない。A total of eight types of paper heat-insulating cups manufactured in this way, including three types of the examples and five types of the comparative examples, a body outer surface immediately below an edge of a body part of a paper cup body and a curl portion in a paper cylinder. Was observed and evaluated by the following method. Table 1 shows the results. Evaluation method of the adhesiveness between the body of the paper cup body and the curled portion of the paper cylinder; breaking the completed paper heat insulating cup and visually checking how much the body and the inner curl are adhered on the circumference Verification. ；: The contact portion between the body portion of the paper cup body and the curl portion in the paper cylinder is completely bonded (all portions are completely bonded in the circumferential direction). Δ: There is a part that is not adhered to the contact part between the body part of the paper cup body and the curl part in the paper cylinder. X: The contact portion between the body of the paper cup body and the curl portion in the paper cylinder is not bonded at all.
【００３８】[0038]
【表１】 [Table 1]
【００３９】表１の結果から、紙カップ本体の胴部を形
成する胴部材に表裏両面にポリオレフィン系樹脂膜を塗
布したポリオレフィン加工紙を使用し、紙カップ本体胴
部の内カール部との接触面のポリオレフィン系樹脂膜を
加熱溶融し、かつ、紙カップ本体胴部あるいは紙製筒体
の内カール部の両方またはいずれか一方にヒートシール
ニス層を形成させることにより、紙カップ本体の胴部と
紙製筒体の内カール部が完全に接着した紙製断熱カップ
が作製できることが分かる（実施例１〜３）。From the results shown in Table 1, it was found that a polyolefin-processed paper having a polyolefin resin film coated on both front and back surfaces was used for the body member forming the body portion of the paper cup body, and the contact surface of the body portion of the paper cup body with the inner curl portion was used. By heating and melting the polyolefin-based resin film, and forming a heat seal varnish layer on both or one of the paper cup body and the inner curl of the paper cylinder, the body of the paper cup body and the paper cylinder are formed. It can be seen that a paper heat-insulating cup in which the inner curl portion of the body is completely adhered can be produced (Examples 1 to 3).
【００４０】[0040]
【発明の効果】上記のように本発明によれば、紙カップ
本体と紙製筒体との接着性が良くなり、カップの横押し
強度（リップ強度）が上がる。また低坪量の紙を使用し
ても強度を維持することができる。紙製筒体の表面にコ
ート層があっても紙カップ本体と十分に接着するため、
美粧印刷が可能になる。従来のエマルジョン型接着剤を
使用し場合と比較して生産スピードが向上する。As described above, according to the present invention, the adhesiveness between the paper cup body and the paper cylinder is improved, and the lateral pushing strength (lip strength) of the cup is increased. Further, the strength can be maintained even if low basis weight paper is used. Even if there is a coat layer on the surface of the paper cylinder, it adheres well to the paper cup body,
Cosmetic printing becomes possible. The production speed is improved as compared with the case where a conventional emulsion type adhesive is used.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の紙製断熱カップの一実施例を示す部分
断面説明図である。FIG. 1 is a partially sectional explanatory view showing one embodiment of a paper heat insulating cup of the present invention.
【図２】図１におけるＡ部を拡大した断面説明図であ
る。FIG. 2 is an enlarged sectional explanatory view of a portion A in FIG. 1;
１‥‥カップ原紙 ２‥‥表面、厚さ１５μｍの低密度ポリエチレン ３‥‥裏面、厚さ２５μｍの低密度ポリエチレン ４‥‥コートボール ５‥‥ヒートシールニス １１０‥‥紙カップ本体 １１‥‥胴部 １２‥‥底部 １３‥‥口縁部 ２０‥‥紙製筒体 ２１‥‥内カール部 ２２‥‥彎曲部 ３０‥‥断熱空間層 1 ‥‥ Cup base paper 2 ‥‥ Low-density polyethylene of 15 μm in thickness on the front side 3 ‥‥ Low-density polyethylene of 25 μm in thickness 4 ‥‥ Coated ball 5 ‥‥ Heat seal varnish 110 ‥‥ Paper cup body 11 ‥‥ Body 12 Bottom part 13 Edge part 20 Paper cylinder 21 Inner curl part 22 Curved part 30 Insulated space layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ６５Ｄ 81/38 Ｂ６５Ｄ 81/38 Ｒ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B65D 81/38 B65D 81/38 R
Claims (2)
にカールした口縁部を有する紙カップ本体と、紙カップ
本体の胴部外側に嵌め込まれ上部周縁に内側にカールし
た内カール部が形成された紙製筒体とから構成され、紙
カップ本体胴部と紙製筒体の間に断熱空間層が形成され
る紙製断熱カップであって、 紙カップ本体の胴部を形成する胴部材は表裏両面にポリ
オレフィン系樹脂膜を塗布したポリオレフィン系樹脂加
工紙から成り、紙カップ本体胴部の口縁部直下の胴部外
側面が、紙製筒体内カール部の外側面とヒートシールニ
スを介して接着固定されていることを特徴とする紙製断
熱カップ。1. A paper cup body having a body portion and a bottom portion and having an opening portion whose outer periphery is curled outward, and an inner curl portion fitted on the outside of the body portion of the paper cup body and curled inward at the upper periphery. A heat insulating space layer formed between the paper cup main body and the paper cylindrical body, wherein the body member forming the main body of the paper cup main body is: It is made of polyolefin resin processed paper coated with polyolefin resin film on both front and back sides, and the outer side surface of the body just below the rim of the paper cup main body is through the heat seal varnish with the outer surface of the curl portion in the paper cylinder. A paper heat-insulating cup, which is adhesively fixed.
程、 紙製筒体ブランクをスリーブ状に加工し、該スリーブの
上部周縁に内側に曲がる内カール部を形成させる内カー
ル部形成工程、 紙カップ本体の口縁部直下の胴部外側面周囲にヒートシ
ールニスを塗布するヒートシールニス塗布工程、 ヒートシールニス塗布部分をホットエアーにより加熱
し、ポリオレフィン系樹脂膜を熱融解するホットエアー
吹き付け工程、 紙製筒体内に紙カップ本体を嵌め込み、紙カップ本体の
胴部外側面と紙製筒体の内カール部外側面とを熱融着に
より接着固定させる嵌め込み固着工程、 上記各工程からなる請求項１記載の紙製断熱カップの製
造方法。2. A paper cup forming step for producing a paper cup body; an inner curl forming step for forming an inner curl part which is bent inward on an upper peripheral edge of the sleeve by processing a paper cylinder blank into a sleeve shape; A heat seal varnish application step of applying a heat seal varnish around the outer periphery of the trunk directly below the lip, a hot air spraying step of heating the heat seal varnish application portion with hot air and heat melting the polyolefin resin film, paper 2. The paper according to claim 1, wherein the paper cup main body is fitted into the cylindrical body, and the outer side surface of the body portion of the paper cup main body and the outer side surface of the inner curl portion of the paper cylindrical body are bonded and fixed by heat fusion. A method of manufacturing a heat-insulating cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000115057A JP2001293802A (en) | 2000-04-17 | 2000-04-17 | Heat insulating cup made of paper and method for manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000115057A JP2001293802A (en) | 2000-04-17 | 2000-04-17 | Heat insulating cup made of paper and method for manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001293802A true JP2001293802A (en) | 2001-10-23 |
Family
ID=18626766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000115057A Pending JP2001293802A (en) | 2000-04-17 | 2000-04-17 | Heat insulating cup made of paper and method for manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001293802A (en) |
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| US8146797B2 (en) | 2005-11-11 | 2012-04-03 | Seda S.P.A. | Insulated cup |
| US8393886B2 (en) | 2005-11-14 | 2013-03-12 | Seda S.P.A. | Device for producing a stacking projection and container with same |
| US8267250B2 (en) | 2006-12-05 | 2012-09-18 | Seda S.P.A. | Package |
| US8240476B2 (en) | 2006-12-05 | 2012-08-14 | Seda S.P.A. | Package |
| US8490792B2 (en) | 2006-12-05 | 2013-07-23 | Seda S.P.A. | Package |
| US8807339B2 (en) | 2006-12-05 | 2014-08-19 | Seda Spa | Package |
| US8191708B2 (en) | 2006-12-05 | 2012-06-05 | Seda S.P.A. | Package |
| JP2009126577A (en) * | 2007-11-28 | 2009-06-11 | Toppan Printing Co Ltd | Thermally insulating container |
| JP2009286402A (en) * | 2008-05-27 | 2009-12-10 | Toppan Printing Co Ltd | Heat insulating cup |
| JP2013220854A (en) * | 2012-04-13 | 2013-10-28 | Tai-Her Yang | Cup sleeve |
| JP2014058336A (en) * | 2012-09-18 | 2014-04-03 | Dainippon Printing Co Ltd | Paper cup |
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